<!doctype html>
<html>
	<head>
		<title>Draggable scrollable element</title>
		<style type="text/css">
div div { width: 300px; height: 100px; overflow: auto; border: 1px solid orange; }
		</style>
		<script type="text/javascript">
window.onload = function () {
	document.getElementsByTagName('div')[1].ondragstart = function (e) {
		e.dataTransfer.effectAllowed = 'copy';
    e.dataTransfer.setData('Text', 'dummy text');
	};
};
		</script>
	</head>
	<body>

		<p>It should be possible to drag the scrollbar thumbs of the box below without dragging the whole box.</p>
		<div>
			<div draggable="true">Dummy text<br>Dummy text<br>Dummy text<br>Dummy text<br>Dummy text<br>Dummy text<br>Dummy text<br>Dummy text<br>Dummy text<br>Dummy text<br>Dummy text<br>xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx</div>
		</div>

	</body>
</html>